o2 Sensor

MadeInThe80s · Post by **MadeInThe80s** » Tue Aug 25, 2009 4:00 pm

So I need to hookup my new o2 sensor and I have no idea where the previous owner stuck the connector that goes up into the dash. Anyone take a pic of what it looks like and kinda where it should be?

It currently has a 4 wire o2 sensor plugged into it and I think that may be whats throwing me off on it. Ive found a two wire round plug that I think was the original o2 connector and if so, Im set.

mooreofit · Post by **mooreofit** » Tue Aug 25, 2009 4:22 pm

you have a megasquirt. i highly recommend a wideband for tuning. tuning with a narrowband sucks.

MadeInThe80s · Post by **MadeInThe80s** » Tue Aug 25, 2009 5:27 pm

I do have a wideband, thats why I needed to know which plug goes back to the harness.

mooreofit · Post by **mooreofit** » Tue Aug 25, 2009 5:56 pm

witch wideband and ill let you know. i have an lc1. ill double check the signal output wire color right quick.

mooreofit · Post by **mooreofit** » Tue Aug 25, 2009 6:04 pm

if its an innovate you need to go to the brown wire.

although the yellow wire simulates a narrowband voltage you could probably make it work. i just dont know how well the resolution is going to be because its a 0-1v signal.

if you just have the sensor by itself then you will need a wideband controller to interface with the megasquirt such as the innovate lc1- lm1 or others.

megasquirt supports alot of controllers.

MadeInThe80s · Post by **MadeInThe80s** » Tue Aug 25, 2009 6:07 pm

Im using the LC-1 as well. Sounds like we have similar setups.

mooreofit · Post by **mooreofit** » Tue Aug 25, 2009 7:26 pm

smart mines think alike!

MadeInThe80s · Post by **MadeInThe80s** » Tue Aug 25, 2009 7:33 pm

Did you put yours in the stock location? And did you just run the wire straight over to the ecu location? or tap the stock connector? I cant find where mine is located.

Post by **dr.occa** » Wed Aug 26, 2009 12:05 am

MadeInThe80s wrote:Did you put yours in the stock location? And did you just run the wire straight over to the ecu location? or tap the stock connector? I cant find where mine is located.

80s, the factory O2 is a single wire type with IIRC a yellow round connector. i'll post up a pic when the vampires go back to bed.

MadeInThe80s · Post by **MadeInThe80s** » Wed Aug 26, 2009 8:17 am

I bet its the one Ive been looking at then.

mooreofit · Post by **mooreofit** » Wed Aug 26, 2009 1:22 pm

im just plain confuzzled? are you tapping the wideband or the stock narrowband?

i welded a new bung in my exhaust for the wideband and kept my stock in to run the stock. ecu. because my auto tranny is ecu controlled

MadeInThe80s · Post by **MadeInThe80s** » Wed Aug 26, 2009 5:39 pm

I'm hooking up the wideband to the stock wire to the megasquirt unit. I asked about the bung because I was worried about heat burning up the sensor. I guess the bung on bottom would work, I just now thought of that! Hah.

mooreofit · Post by **mooreofit** » Wed Aug 26, 2009 9:15 pm

the sensor can take the heat. they just dont like pressure because it will skew the reading. ie: before a turbo or something.

Post by **dr.occa** » Wed Aug 26, 2009 10:27 pm

here are a couple of shots of the stock o2 and connector: